Most people think all the hot action happens on the mountains during Winter X Games, but the side-parties are where most of the good stuff goes down. Prime example: two nights of ultimate shows at the Belly Up, Aspen’s music nightclub. On Jan. 23, British indie rockers Bloc Party take the stage and on Jan. 25 world-renown DJ, Calvin Harris, is set to play an already sold-out show. The Scottish electronic artist is one of the top on the scene, climbing the charts for his “We Found Love” collaboration with Rihanna. The two other nights at the venue? Booked for private parties.